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Breakthroughs in Memory Technology

Breakthroughs in Memory Technology

1947:

RAM

Random

Access

Memory

RandomAccessMemory

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Introduced byF.C. Williams

Productized byUniversity of Manchester

Initial capacity~128 Bytes

Williams Tube

...used a series of electrostatic cathode-ray tubes for digital storage.

Manchester Small-Scale Experimental Machine (SSEM) computer

The first electonically-stored memory program was implemented using a Williams tube.

1956:

PROM

Programmable

Read-Only

Memory

ProgrammableRead-OnlyMemory

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Introduced byWen Tsing Chow

At the request of the United States Air Force, productized byAmerican Bosch Arma Corporation

Initial capacity~128 Bytes

The term "burn"...

...referring to the process of programming a PROM comes from one of the original implementations, where the internal whiskers of diodes were literally burned with a current overload to produce a circuit discontinuity.

1 Technology claims are based on comparisons of latency, density and write cycling metrics amongst memory technologies recorded on published specifications of in-market memory products against internal Intel specifications.

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